The high priest Melchizedek offered mere bread and wine. Jesus, a priest of the order of Melchizedek, offered His true Body and true Blood under the appearance of bread and wine.
True, Lord Jesus offered his body and blood for purchase redemption for our sins, but the Scriptures never state that bread and wine transforms into the body and blood of Lord Jesus. However, if you want to believe that, go ahead and do so.
What was in the cup was "the fruit of the vine" just as Lord Jesus stated, but represented the New Covenant in His blood.
Matthew 26:27-29 (WEB) 27 He took the cup, gave thanks, and gave to them, saying, “
All of you drink it, 28 for this is my
blood of the new covenant, which is poured out for many for the remission of sins. 29 But I tell you that I will not drink of this
fruit of the vine from now on, until that day when I drink it anew with you in my Father’s Kingdom.”
What Lord Jesus gave them to eat was bread, but represented his body broke for them.
Luke 22:19-20 (WEB) 19 He took bread, and when he had given thanks, he broke, and gave it to them, saying, “This is my body which is given for you.
Do this in memory of me.” 20 Likewise, he took the cup after supper, saying, “This cup is the new covenant in my blood, which is poured out for you.
When disciples of Jesus questioned him Jesus became even more emphatic and some actually walked away. It is a "hard saying." The disciples of Jesus did not question him about literally being a door, they did not say "How can this man be made of wood?"
They understood the door was figurative, but they did question Jesus when he was speaking literally about eating His Body. Jesus was honest and blunt with them.
They were taking literally what Lord Jesus was meaning figuratively.
John 6:35 (WEB) Jesus said to them, “I am the bread of life. Whoever
comes to me [
eating] will not be
hungry, and whoever
believes in me [
drinking] will never be
thirsty.
The Gospel of Salvation is about
coming to (eating) Lord Jesus and
believing (drinking) in Him to be saved, and NOT by eating his literal flesh and drinking his blood.
John 6:63 (WEB) It is the spirit who gives life. The flesh profits nothing. The words that I speak to you are spirit, and are life.
According to the Gospel we don't possess eternal life by literally eating his flesh and drinking his blood, but be truly believing in him - the New Covenant is about the Spirit, not the flesh.
John 7:37-39 (WEB) 37 Now on the last and greatest day of the feast, Jesus stood and cried out, “If anyone
is thirsty, let him
come to me and drink! 38 He
who believes in me, as the
Scripture has said, from within him will
flow rivers of living water.” 39 But he said this
about the Spirit, which those believing in him were to receive.
The comment about the fruit of the vine is a reference to wine. At the first mass, the Last Supper, Jesus linked the Passover to the mass. Jesus was both High Priest and sacrifice. During the Passover the Passover was not complete until the unblemished lamb was eaten. Jesus is the Lamb of God. During Passover there are four cups of wine. Jesus did not drink the fourth cup until He was on the cross, right before he said "It is finished." Remember the blood of the lamb was sprinkled with hyssop for Passover, Jesus was given wine on a sponge raised with the stalk of a hyssop plant.
Lord Jesus plainly stated that what they were drinking was the
fruit of the vine, which represents the New Covenant in His Blood to all who believe in him. That is the Gospel.
Matthew 26:27-29 (WEB) 27 He took the cup, gave thanks, and gave to them, saying, “
All of you drink it, 28 for this is my
blood of the new covenant, which is poured out for many for the remission of sins. 29 But I tell you that I will not drink of this
fruit of the vine from now on, until that day when I drink it anew with you in my Father’s Kingdom.”
Lord Jesus said that what they were drinking was "
fruit of the vine."
If you want to rebel against Lord Jesus, and continue believing that you have to literally eat Christ's body and drink his blood to be saved, you are free to do so; however, that is not the context. The context is always about coming to Lord Jesus and believing in Him as our Savior and Lord.
That is the Gospel all through the New Testament.